71165 has 8 divisors (see below), whose sum is σ = 87648. Its totient is φ = 55440.

The previous prime is 71161. The next prime is 71167. The reversal of 71165 is 56117.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71165 - 2² = 71161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50 + ... + 380.

It is an arithmetic number, because the mean of its divisors is an integer number (10956).

2⁷¹¹⁶⁵ is an apocalyptic number.

It is an amenable number.

71165 is a deficient number, since it is larger than the sum of its proper divisors (16483).

71165 is a wasteful number, since it uses less digits than its factorization.

71165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its digits is 210, while the sum is 20.

The square root of 71165 is about 266.7676891979. The cubic root of 71165 is about 41.4402294353.

The spelling of 71165 in words is "seventy-one thousand, one hundred sixty-five".